London Eye, London

Concierge.com's insider take:

The 443-foot-high London Eye, designed by husband-and-wife architects David Marks and Julia Barfield, is the largest observation wheel in the world. Perched on the banks of the Thames, more or less opposite the Houses of Parliament, it has become a capital-L Landmark since it appeared for the millennium festivities. The real point, of course, is the view from inside the 32 glass capsules, which, on a clear day, extends 25 miles and is quite spectacular.

Open daily May, June, and September 10 am to 9 pm, July and August 10 am to 9:30 pm, October through April 10 am to 8 pm